Compilare: user.cpp: In function ‘int main()’: user.cpp:31:8: warning: statement has no effect [-Wunused-value] v[4]; ~~~^ user.cpp:7:8: warning: unused variable ‘x’ [-Wunused-variable] {int i,x,poz; ^ user.cpp:26:27: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[a[i]]=dp[poz-1]; ~~~^~ user.cpp: In function ‘int cautbin(int, int, int)’: user.cpp:58:12: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^~~~